Abstract
Aims of study: Water deficit (WD) is becoming an alarming problem in many regions of the world. Jasmonic acid (JA) is considered an important intracellular plant growth regulator. The aim of the current research was to investigate the important role of JA in mitigating the negative effects of WD on plant growth.Area of study: Sugar beet production systems of two locations in Chaharmahal-Bakhtiari province, Iran.Material and methods: A field trial was conducted to assess the foliar applications of JA (0, 5 µM and 10 µM) and WD (50%, 75%, 100% plant water requirements) effects on physiological yield components of sugar beet (Beta vulgaris L.) plants.Main results: WD significantly (p<0.05) increased catalase, ascorbate and peroxidase activities, and malondialdehyde, hydrogen peroxide and white sugar content (WSC); however, it caused a reduction in white sugar yield and root yield (RY). JA foliage applications further enhanced the enzymes activity in WD treated plants resulting in higher WSC, potassium concentrations, white sugar and final RY. Interestingly the effects of JA applications were more pronounced under severe WD (50%) compared to mild (75%) or well-watered plants (100%). JA (10 µM) foliage applications increased the RY and white sugar production by 21% and 24% under severe WD.Research highlights: JA can ameliorate the adverse effects of WD and increase the WD tolerance of sugar beet crop by upregulating the antioxidant enzyme activities to withstand adverse environmental conditions.
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Claims 11
Claim · model-written summary
Water deficit significantly increased catalase, ascorbate and peroxidase activities.
- Taxon
- sugar beet
Beta vulgaris subsp. vulgarist0 - Treatment
- WDe0
- Outcome
- catalase, ascorbate and peroxidase activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WD significantly (p<0.05) increased catalase, ascorbate and peroxidase activities”
t0“sugar beet”
Claim · model-written summary
Water deficit significantly increased malondialdehyde and hydrogen peroxide.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- WDe0
- Outcome
- malondialdehyde, hydrogen peroxidee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WD significantly (p<0.05) increased catalase, ascorbate and peroxidase activities, and malondialdehyde, hydrogen peroxide and white sugar content (WSC)”
t0“sugar beet”
Claim · model-written summary
Water deficit significantly increased white sugar content.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- WDe0
- Outcome
- white sugar content (WSC)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“WD significantly (p<0.05) increased catalase, ascorbate and peroxidase activities, and malondialdehyde, hydrogen peroxide and white sugar content (WSC)”
t0“sugar beet”
Claim · model-written summary
Water deficit reduced white sugar yield and root yield.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- WDt1
- Outcome
- white sugar yield and root yield (RY)e0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“it caused a reduction in white sugar yield and root yield (RY)”
t0“sugar beet”
t1“WD significantly”
Claim · model-written summary
Foliar jasmonic acid further enhanced antioxidant enzyme activity in water deficit treated plants.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA foliage applicationse0
- Outcome
- enzymes activitye0
- Direction
- enhancede0
- Qualifier
- WD treated plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA foliage applications further enhanced the enzymes activity in WD treated plants”
t0“sugar beet”
Claim · model-written summary
Foliar jasmonic acid increased white sugar content and potassium concentrations under water deficit.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA foliage applicationse0
- Outcome
- WSC, potassium concentrationse0
- Direction
- highere0
- Qualifier
- WD treated plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA foliage applications further enhanced the enzymes activity in WD treated plants resulting in higher WSC, potassium concentrations, white sugar and final RY”
t0“sugar beet”
Claim · model-written summary
Foliar jasmonic acid increased white sugar yield and final root yield under water deficit.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA foliage applicationse0
- Outcome
- white sugar and final RYe0
- Direction
- highere0
- Qualifier
- WD treated plantse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA foliage applications further enhanced the enzymes activity in WD treated plants resulting in higher WSC, potassium concentrations, white sugar and final RY”
t0“sugar beet”
Claim · model-written summary
Jasmonic acid effects were stronger under severe water deficit than under mild water deficit or full watering.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA applicationse0
- Outcome
- effects of JA applicationse0
- Direction
- more pronouncede0
- Qualifier
- severe WD (50%)e0
- Comparator
- mild (75%) or well-watered plants (100%)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the effects of JA applications were more pronounced under severe WD (50%) compared to mild (75%) or well-watered plants (100%)”
t0“sugar beet”
Claim · model-written summary
Under severe water deficit, 10 µM foliar jasmonic acid increased root yield by 21%.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA (10 µM) foliage applicationse0
- Outcome
- RYe0
- Direction
- increasede0
- Value
- 21%e0
- Qualifier
- severe WDe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA (10 µM) foliage applications increased the RY and white sugar production by 21% and 24% under severe WD”
t0“sugar beet”
Claim · model-written summary
Under severe water deficit, 10 µM foliar jasmonic acid increased white sugar production by 24%.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarist0
- Treatment
- JA (10 µM) foliage applicationse0
- Outcome
- white sugar productione0
- Direction
- increasede0
- Value
- 24%e0
- Qualifier
- severe WDe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA (10 µM) foliage applications increased the RY and white sugar production by 21% and 24% under severe WD”
t0“sugar beet”
Claim · model-written summary
Authors conclude that jasmonic acid improves water deficit tolerance by upregulating antioxidant enzymes.
- Taxon
- sugar beetBeta vulgaris subsp. vulgarise0
- Treatment
- JAe0
- Outcome
- WD tolerancee0
- Direction
- increasee0
- Qualifier
- upregulating the antioxidant enzyme activitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“JA can ameliorate the adverse effects of WD and increase the WD tolerance of sugar beet crop by upregulating the antioxidant enzyme activities”
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